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    HYBRID PHOTONIC RING MODULATORS
    11.
    发明申请
    HYBRID PHOTONIC RING MODULATORS 有权

    公开(公告)号：US20220107542A1

    公开(公告)日：2022-04-07

    申请号：US17065118

    申请日：2020-10-07

    Applicant: Juniper Networks, Inc.

    Inventor： John Parker ,  Jonathan Edgar Roth ,  Gregory Alan Fish

    IPC: G02F1/225

    Abstract: Photonic ring modulators with high tuning efficiency and small footprint can be formed in a hybrid material platform from a silicon bus waveguide vertically coupled to an optically active compound semiconductor (e.g., III-V) ring resonator. The performance of the modulator, e.g., in terms of the tuning efficiency and the maximum insertion loss, may be optimized by suitable levels of an applied bias voltage and a heater power of a heater optionally included in the ring modulator. The disclosed hybrid photonic ring modulators may be used, e.g., in photonic transceiver circuits with high lane count.

    Optical coupler including a faraday rotator layer and at least one grating coupler
    12.
    发明授权
    Optical coupler including a faraday rotator layer and at least one grating coupler 有权

    公开(公告)号：US11137555B2

    公开(公告)日：2021-10-05

    申请号：US16727525

    申请日：2019-12-26

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth ,  Jared Bauters ,  Gregory Alan Fish

    IPC: G02B6/00 ,  G02B6/42 ,  G02B6/27 ,  G02B6/34

    Abstract: An optical coupling device can couple incident light from a fiber into waveguides, but can reduce the coupling of return light from the waveguides into the fiber. A Faraday rotator layer can rotate by forty-five degrees, with a first handedness, respective planes of polarization of incident beams, and can rotate by forty-five degrees, with a second handedness opposite the first handedness, respective planes of polarization of return beams. A redirection layer can include at least one grating coupler that can redirect an incident beam of one polarization so that the redirected path extends within the redirection layer toward a first waveguide, and can redirect an incident beam of an opposite polarization so that the redirected path extends within the redirection layer toward a second waveguide. An optional birefringent layer can spatially separate incident beam having different polarizations, so that two single-polarization grating couplers can be used.

    Integrated optoelectronic device with heater
    13.
    发明授权
    Integrated optoelectronic device with heater 有权

    公开(公告)号：US11106060B2

    公开(公告)日：2021-08-31

    申请号：US16919802

    申请日：2020-07-02

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth ,  Erik Johan Norberg

    IPC: G02F1/025 ,  G02F1/017 ,  G02F1/015 ,  G02F1/01

    Abstract: Disclosed are structures as well as methods of manufacture and operation of integrated optoelectronic devices that facilitate directly heating the diode or waveguide structures to regulate a temperature of the device while allowing electrical contacts to be placed close to the device to reduce the electrical resistance. Embodiments include, in particular, heterogeneous electro-absorption modulators that include a compound-semiconductor diode structure placed above a waveguide formed in the device layer of an SOI substrate.

    REDUCED CROSSTALK PHOTONIC SWITCH
    14.
    发明申请
    REDUCED CROSSTALK PHOTONIC SWITCH 有权

    公开(公告)号：US20210160596A1

    公开(公告)日：2021-05-27

    申请号：US17161104

    申请日：2021-01-28

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth

    IPC: H04Q11/00 ,  G02B6/35 ,  H04B10/548 ,  G02F1/313

    Abstract: Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.

    Dissipating heat from an active region of an optical device
    15.
    发明授权
    Dissipating heat from an active region of an optical device 有权

    公开(公告)号：US10809548B2

    公开(公告)日：2020-10-20

    申请号：US15685374

    申请日：2017-08-24

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth ,  Erik Norberg

    IPC: G02F1/025 ,  G02F1/017 ,  G02F1/00 ,  G02F1/01 ,  G02B6/136 ,  G02B6/12 ,  B82Y20/00 ,  H01L31/0352 ,  H01L31/024

    Abstract: A device, such as an electroabsorption modulator, can modulate a light intensity by controllably absorbing a selectable fraction of the light. The device can include a substrate. A waveguide positioned on the substrate can guide light. An active region positioned on the waveguide can receive guided light from the waveguide, absorb a fraction of the received light, and return a complementary fraction of the received light to the waveguide. Such absorption produces heat, mostly at an input portion of the active region. The input portion of the active region can be thermally coupled to the substrate, which can dissipate heat from the input portion, and can help avoid thermal runaway of the device. The active region can be thermally isolated from the substrate away from the input portion, which can maintain a relatively low thermal mass for the active region, and can increase efficiency when heating the active region.

    Optical coupler including a faraday rotator layer and at least one grating coupler
    17.
    发明授权
    Optical coupler including a faraday rotator layer and at least one grating coupler 有权

    公开(公告)号：US10551575B2

    公开(公告)日：2020-02-04

    申请号：US15685114

    申请日：2017-08-24

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth ,  Jared Bauters ,  Gregory Alan Fish

    IPC: G02B6/00 ,  G02B6/42

    Abstract: An optical coupling device can couple incident light from a fiber into waveguides, but can reduce the coupling of return light from the waveguides into the fiber. A Faraday rotator layer can rotate by forty-five degrees, with a first handedness, respective planes of polarization of incident beams, and can rotate by forty-five degrees, with a second handedness opposite the first handedness, respective planes of polarization of return beams. A redirection layer can include at least one grating coupler that can redirect an incident beam of one polarization so that the redirected path extends within the redirection layer toward a first waveguide, and can redirect an incident beam of an opposite polarization so that the redirected path extends within the redirection layer toward a second waveguide. An optional birefringent layer can spatially separate incident beam having different polarizations, so that two single-polarization grating couplers can be used.

    REDUCED CROSSTALK PHOTONIC SWITCH
    20.
    发明申请
    REDUCED CROSSTALK PHOTONIC SWITCH 审中-公开

    公开(公告)号：US20200236448A1

    公开(公告)日：2020-07-23

    申请号：US16839597

    申请日：2020-04-03

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth

    IPC: H04Q11/00 ,  G02F1/313 ,  G02B6/35 ,  H04B10/548

    Abstract: Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.

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